Abstract
To investigate the efficiency and safety profile of the addition of S-1 to gemcitabine (GEM)-based chemotherapy for advanced pancreatic cancer (APC). Computerized search was undertaken to identify randomized controlled trials of S-1 plus GEM versus GEM monotherapy in APC patients. The outcomes included overall survival (OS), progression-free survival (PFS), response rate, and toxicities. Five studies with 917 patients were included. Overall, there was a significant difference between the two regimens in terms of OS (HR=0.83, 95%CI=0.72-0.96, P=0.01), PFS (HR=0.64, 95%CI=0.56-0.74, P<0.0001), and overall response rate (ORR; RR=2.36, 95%CI=1.73-3.22, P<0.00001). Occurrence of grade 3/4 hematological toxicities (neutropenia, thrombocytopenia) and non-hematological toxicities (diarrhea, nausea/vomit, rush, stomatitis/mucositis) were significantly higher with GEM/S-1 treatment. This meta-analysis indicated a significant survival benefit with increased toxicity when S-1 was combined with GEM. GEM/S-1 might be an option of first-line chemotherapy for APC patients, at least in Asia.
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